256831281

素因数分解:

$3^2\times 7^1\times {\mathrm{1439}}^1\times {\mathrm{2833}}^1$

素因数の和:4285

約数の個数: 24

約数和(自身を含む): 424419840

約数和(自身を除く): 167588559

約数列:

[1, 3, 7, 9, 21, 63, 1439, 2833, 4317, 8499, 10073, 12951, 19831, 25497, 30219, 59493, 90657, 178479, 4076687, 12230061, 28536809, 36690183, 85610427, 256831281]

約数ペア:

[(1, 256831281), (3, 85610427), (7, 36690183), (9, 28536809), (21, 12230061), (63, 4076687), (1439, 178479), (2833, 90657), (4317, 59493), (8499, 30219), (10073, 25497), (12951, 19831)]